forked from syncthing/syncthing
/
memsize_linux.go
48 lines (42 loc) · 1.19 KB
/
memsize_linux.go
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// Copyright (C) 2014 The Syncthing Authors.
//
// This program is free software: you can redistribute it and/or modify it
// under the terms of the GNU General Public License as published by the Free
// Software Foundation, either version 3 of the License, or (at your option)
// any later version.
//
// This program is distributed in the hope that it will be useful, but WITHOUT
// ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
// FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
// more details.
//
// You should have received a copy of the GNU General Public License along
// with this program. If not, see <http://www.gnu.org/licenses/>.
package main
import (
"bufio"
"errors"
"os"
"strconv"
"strings"
)
func memorySize() (uint64, error) {
f, err := os.Open("/proc/meminfo")
if err != nil {
return 0, err
}
s := bufio.NewScanner(f)
if !s.Scan() {
return 0, errors.New("/proc/meminfo parse error 1")
}
l := s.Text()
fs := strings.Fields(l)
if len(fs) != 3 || fs[2] != "kB" {
return 0, errors.New("/proc/meminfo parse error 2")
}
kb, err := strconv.ParseUint(fs[1], 10, 64)
if err != nil {
return 0, err
}
return kb * 1024, nil
}